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2005 Fiscal Year Final Research Report Summary

Acceleration of Geometric Computations in CAD and CAM by Using Polygon Rendering Hardware

Research Project

Project/Area Number 15360064
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Production engineering/Processing studies
Research InstitutionIbaraki University

Principal Investigator

INUI Masatomo  Ibaraki University, College of Engineering, Professor, 工学部, 教授 (90203215)

Co-Investigator(Kenkyū-buntansha) MIYASHITA Tomoyuki  Waseda University, Mechanical Engineering, Associate Professor, 理工学部, 助教授 (20329080)
SUZUKI Hiromasa  The University of Tokyo, RCAST, Professor, 先端科学技術研究センター, 教授 (40187761)
KANAI Takashi  Keio University, Graduate School of Media and Governance, Lecturer, 大学院・政策・メディア研究科, 講師 (60312261)
Project Period (FY) 2003 – 2005
KeywordsGPU / CAD / CAM / Process Planning / Surface design
Research Abstract

In order to follow frequently changing customer preferences and to quickly distribute products with high market competitiveness, Japanese manufacturing companies make efforts to shorten the production preparation time after the design completion. Most time period of the production preparation is consumed for making dies and molds for stamping, casting and plastic molding of parts. Dies and molds are usually fabricated using 3-axis numerically controlled (NC) milling machines with various shape cutters. Computation of the reliable cutter path is still a difficult problem. Several hours are often needed for computing whole cutter paths for milling a complex die. Members in this project jointly develop a new technology for fast generation and verification of the cutter path for NC milling. Our technology uses graphics processing unit (GPU) which is currently equipped in most computers, for accelerating the geometric computation in process planning, NC path generation and path verification. As the result of the project, the following technologies are realized ; (1) a practical GPU accelerated CAM system is developed. This system is currently running as a kernel system of one Japanese automobile manufacturer, (2) an algorithm for projecting the machining remained area in a prior machining to the cutter location surface for the next machining is proposed. This projection is useful for automating some process planning task of mold machining, (3) some GPU accelerated algorithms for defining the curved surface and evaluating its geometric quality are developed, (4) several algorithms for accelerating geometric computations in non-manufacturing fields are developed also. Proposed algorithms are implemented and an experimental CAD/CAM/CAPP programs using this technology are demonstrated.

  • Research Products

    (13 results)

All 2006 2005 2004 2003

All Journal Article (12 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] 頑健かつ高速な等角球体パラメータ化計算手法2006

    • Author(s)
      金井崇
    • Journal Title

      情報処理学会論文誌 46・2

      Pages: 649-

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 金型加工の工程設計支援技術に関する研究(第一報) -削り残り領域の逆オフセット面への投影アルゴリズム-2006

    • Author(s)
      乾正知
    • Journal Title

      精密工学会誌 72・2

      Pages: 244-

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Study on Computer-Aided Process Planning of Mold Part Machining, Projection of the Machining Remained Area to Cutter Location Surface of the Product2006

    • Author(s)
      Masatomo Inui
    • Journal Title

      Journal of JSPE Vo.72, No.2

      Pages: 244

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Model-Based Simulation System for Planning Numerical Controlled Multi-Axis 3D Surface Scanning Machine2005

    • Author(s)
      Peng Wu, Hiromasa Suzuki, Kiwamu Kase
    • Journal Title

      JSME International Journal, Series C 48・4

      Pages: 748-

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Three-Axis NC Cutter Path Generation for Subdivision Surface with Z-map2005

    • Author(s)
      Peng Wu, Hiromasa Suzuki, Kiwamu Kase
    • Journal Title

      JSME International Journal, Series C 48・4

      Pages: 757-

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Model-Based Simulation System for Planning Numerical Controlled Multi-Axis 3D Surface Scanning Machine2005

    • Author(s)
      Peng Wu, Hiromasa Suzuki, Kiwamu Kase
    • Journal Title

      JSME International Journal, Series C Vol.48, No.4

      Pages: 748

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Three-Axis NC Cutter Path Generation for Subdivision Surface with Z-map2005

    • Author(s)
      Peng Wu, Hiromasa Suzuki, Kiwamu Kase
    • Journal Title

      JSME International Journal, Series C Vol.48, No.4

      Pages: 757

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Robust and Fast Calculation of Conformal Spherical Parameterization2005

    • Author(s)
      Takashi Kanai
    • Journal Title

      Journal of IPSJ Vol.46, No.2

      Pages: 649

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Fast Inverse Offset Computation Using Polygon Rendering Hardware2003

    • Author(s)
      Masatomo INUI
    • Journal Title

      Computer-Aided Design 35

      Pages: 191-

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] ボロノイ図とタブーサーチを融合した配電計画評価手法2003

    • Author(s)
      林泰弘, 松本純也, 能勢正樹, 乾正知
    • Journal Title

      電気学会論文誌B 123・B・10

      Pages: 1124-

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Fast Inverse Offset Computation Using Polygon Rendering Hardware2003

    • Author(s)
      Masatomo Inui
    • Journal Title

      Computer-Aided Design Vol.35

      Pages: 191

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Distribution System Planning Evaluation Method Using Voronoi Diagram and Tabu Search2003

    • Author(s)
      Yasuhiro Hayashi, Junya Matsuki, Masaki Nose, Masatomo Inui
    • Journal Title

      IEEJ Trans.PE Vol.123, No.10

      Pages: 1124

    • Description
      「研究成果報告書概要(欧文)」より
  • [Patent(Industrial Property Rights)] 加工経路の生成方法、加工残りの判定方法、加工経路の生成用プログラム、加工残り判定用プログラムおよび記憶媒体2004

    • Inventor(s)
      乾正知, 細田剛
    • Industrial Property Rights Holder
      マツダ(株)
    • Industrial Property Number
      特許、特願2004-103141
    • Filing Date
      2004-03-13
    • Description
      「研究成果報告書概要(和文)」より

URL: 

Published: 2007-12-13  

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